考研英语长难句only 的用法Left ,until now,to odd,low-level IT staff to

考研英语长难句only 的用法
Left ,until now,to odd,low-level IT staff to put right,and seen as a concern only of data-rich industries such as banking,telecoms and air travel,information protection is now high on the boss's agenda in businesses of every variety.
该句中only为什么放在of的前面而不是放在data-rich industries的前面